1986 BMW 730 vs. 2003 BMW X5
To start off, 2003 BMW X5 is newer by 17 year(s). Which means there will be less support and parts availability for 1986 BMW 730. In addition, the cost of maintenance, including insurance, on 1986 BMW 730 would be higher. At 2,993 cc (6 cylinders), 2003 BMW X5 is equipped with a bigger engine. In terms of performance, 2003 BMW X5 (227 HP @ 6100 RPM) has 30 more horse power than 1986 BMW 730. (197 HP @ 5800 RPM) In normal driving conditions, 2003 BMW X5 should accelerate faster than 1986 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X5 weights approximately 470 kg more than 1986 BMW 730. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1986 BMW 730. In wet, icy, snow, or gravel driving conditions, 2003 BMW X5 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2003 BMW X5 (300 Nm @ 3500 RPM) has 25 more torque (in Nm) than 1986 BMW 730. (275 Nm @ 4000 RPM). This means 2003 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1986 BMW 730.
Compare all specifications:
| 1986 BMW 730 | 2003 BMW X5 | |
| Make | BMW | BMW |
| Model | 730 | X5 |
| Year Released | 1986 | 2003 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 197 HP | 227 HP |
| Engine RPM | 5800 RPM | 6100 RPM |
| Torque | 275 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 89 mm | 84.1 mm |
| Engine Stroke Size | 80 mm | 89.6 mm |
| Engine Compression Ratio | 9.2:1 | 10.2:1 |
| Acceleration 0-100mph | 9.3 seconds | 8.3 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1600 kg | 2070 kg |
| Vehicle Length | 4920 mm | 4670 mm |
| Vehicle Width | 1850 mm | 1880 mm |
| Vehicle Height | 1420 mm | 1720 mm |
| Wheelbase Size | 2800 mm | 2890 mm |
